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At least 19 recordsLinked to original sources
PubMed1976

Exposure to drugs and other possibly harmful factors during the first trimester of pregnancy. Comparison of two prospective studies performed in Sweden 10 years apart.

474 women in mid-pregnancy, interviewed at ten different hospitals in Sweden, were questioned on a number of social and medical items: e.g., drug use, contraceptive technique used before pregnancy, exposure to possibly deleterious factors in the environment. The study, compared with a similar study made ten years earlier in Sweden, showed little or no difference in the use of iron and/or vitamin preparations, analgesic drugs, antibiotics, or endocrine drugs; but a drastic reduction is noted in the use of psychotropic drugs and of antihistaminic drugs. A marked decrease in frequency of first trimester X-ray exposures can be found, but no marked changes in smoking habits. Appr. 18% of the women used contraceptive pills within 6 months of becoming pregnant---3 had used them during early pregnancy. About 4% (18 women) had used IUD---one became pregnant with a Cu-UID (intra-uterine device inpregnated with copper).This type of study can provide some information on the prevalence of relatively common factors, but it must be considerably extended in order to permit an analysis of rare events, e.g., use of most drugs.

Abnormalities, Drug-Induced↗
PubMed1976

[Teratogenic damages of the male genital organs].

1. Malformations and functional disturbances of the male genitalia may be caused by teratogens. 2. A short review of the prenatal development points out the possible sites of action. 3. In animals some distinct teratogens produce typical malformation syndromo spermatogenetic cells. Cyproteronacetat, an antiandrogen, suppresses the development of the accessoric genital organs and produces an external feminisation. 4. In man, cryptorchidism, agenesis of the spermatic tracts, anorchia and hypospady are known as non-hereditary malformations. 5. The teratogenic etiology of some disturbances of the spermatogenesis is discussed.

Abnormalities, Drug-Induced↗
PubMed1977

Induction of urogenital anomalies and some tumors in the progeny of mice receiving diethylstilbestrol during pregnancy.

Pregnant mice were given a single dose (10 mug/g body weight) of diethylstilbestrol (DES) on Days 7 to 19, which correspond to the first to fifth lunar months in humans, after the authors, using a 14C-labeled compound, confirmed easy placental penetration by DES. Treatment with DES on Days 15 to 19 resulted in the induction of persistent urogenital sinus (15.8 to 92.5%) and hypertrophy of the portio vaginalis (11.8 to 73.3%) in female offspring, and treatment on Days 17 and 19 resulted in the induction of undescended testes and their hypogenesis (70.4 to 73.3%) in male offspring, although treatment with DES at other stages of pregnancy and after birth did not cause these alterations. The incidence of various tumors (lung adenoma, granulosa cell tumor, etc.) increased significantly (31.0 to 37.9%) when DES was given on Days 15 and 17, which correspond to the stage sensitive to other carcinogens. However, adenosis and adenocarcinoma of the vagina were not observed in the offspring.

Abnormalities, Drug-Induced↗
PubMed1978

Metronidazole treatment in pregnancy.

Vaginal trichomoniasis was treated with standard courses of oral metronidazole in 597 pregnant women. In 283 other pregnant women, the infection remained untreated. The incidences of low-birth-weight infants, stillbirths and congenital abnormalities were not affected by metronidazole treatment of trichomoniasis in pregnancy.

Abnormalities, Drug-Induced↗
PubMed1977

Potentiation by the injection vehicle of the teratological action of acetazolamide in rats.

The high alkalinity of the injection vehicle of certain parenteral solutions of acetazolamide produces necrosis of the skin upon sc injection. The possible modification of this effect on the teratogenicity of acetazolamide was examined. Acetazolamide in a vehicle of pH 10.5 produced 36.6% fetal malformations, in a vehicle of pH 8.7, 6.1%, and in neutral suspension, 11.8%. Adrenal medullectomy or phentolamine plus the high pH acetazolamide reduced the frequency to 23.2 and 24.4%, respectively. The teratogenicity of the low pH acetazolamide was increased by epinephrine to 64.2%. The frequency of hemimelia and micromelia, and of bilateral involvement, was greater in litters exposed to the high pH acetazolamide or the epinephrine-acetazolamide combinations, and was reduced by phentolamine or adrenal medullectomy. Neither the high pH vehicle nor epinephrine produced fetal defects in the absence of acetazolamide. The biological disposition of acetazolamide was not altered by any of the treatments. Reduction of uterine blood flow may be responsible for the potentiation of teratogenicity by the high pH vehicle.

Abnormalities, Drug-Induced↗
PubMed1978

Teratogenic action of bis(dichloroacetyl)diamine on rats: patterns of malformations produced in high incidence at time-limited periods of development.

Win 18,446, a bis(dichloroacetyl)diamine, is a drug that was previously shown to suppress spermatogenesis and to be an effective oral abortifacient in rats. The present study shows that the drug is capable of producing characteristic congenital malformations in high incidence, by a single treatment, and with high survival of fetuses to day 21. Gestation day 11 is the most sensitive time. The teratologies obtained after various schedules of treatment include malformations of the snout (100%), septal heart defects (100%) diaphragmatic hernias (100%), cryptorchism (100%), cervical pockets (100%) and absent or small irregular thymus (92%). Some of these data, namely of the heart, face and thymus, cluster in patterns that indicate that the action of the drug is upon a time-resistricted developmental process. These periods of sensitivity are subsiding or have ended before primordia of these structures appear, but they coincide with the proliferation and migration of those mesenchyme cells that will eventually form or contribute to the structures affected. It is postulated that the drug acts on these mesenchyme cells, or on the extracellular matrix that provides the necessary framework for their dispersal.

Abnormalities, Drug-Induced↗
PubMed1978

Enhancement of chlorcyclizine teratogenicity in the rat by coadministration of calcium chelating agents.

Chlorcyclizine and structurally related drugs induce a high incidence of cleft palate and skeletal malformations in fetal rats. We have shown previously that these teratogens bind tightly and reversibly to chondroitin sulfate of cartilage and compete with calcium for binding. Experiments reported here demonstrate that co-administration of calcium chelating agents with chlorcyclizine significantly increases both the frequency of malformations and retention of [14C] chlorcyclizine by embryos. Retention of radioactive teratogen by embryos is inverse to retention of [45Ca]calcium. These findings suggest that drug binding to embryonic glycosaminoglycans is involved in the pathogenesis of malformations produced by chlorcyclizine.

Abnormalities, Drug-Induced↗
PubMed1978

Chlorcyclizine induction of cleft palate in the rat: degradation of palatal glycosaminoglycans.

Administration of the cleft palate teratogen chlorcyclizine or norchlorcyclizine to pregnant rats causes an alteration in glycosaminoglycans (GAGs) in embryonic palatal shelves. Pulse-chase experiments in vitro indicate that norchlorcyclizine enhances the degradation of hyaluronic acid and chondroitin sulfate but has little or no effect on their synthesis. These changes in GAGs are caused by concentrations of norchlorcyclizine that have no appreciable effect on DNA or protein synthesis. These findings suggest that degradation of palatal GAGs may be the primary biochemical defect responsible for the inhibition of palatal shelf elevation by norchlorcyclizine.

Abnormalities, Drug-Induced↗
PubMed1975

Congenital malformations of the central nervous system produced by narcotic analgesics in the hamster.

Maternal dose--fetal teratogenic response data were obtained for a variety of narcotic and related compounds by single subcutaneous injections of the drugs into pregnant hamsters during the critical periods of central nervous system organogenesis. The number of abnormal fetuses from females injected with diacetylmorphine (heroin), thebaine, phenazocine, pentazocine, propoxyphene, and methadone increased as the maternal dose of the compounds was increased. By contrast, morphine, hydromorphone, and meperidine produced an increase in the number (per cent) of fetal anomalies only up to a certain maternal dose level. Further increases in maternal dose levels did not produce additional fetal anomalies. Comparative studies of single and multiple maternal doses indicated that diacetylmorphine (heroin) and methadone produced a four- to sixfold increase in fetal anomalies with repetitive doses whereas the percentage of malformed fetuses remained the same with hydromorphone (Dilaudid). The narcotic antagonists nalorphine, naloxone, levallophan, and cyclazocine blocked the teratogenic effects of both single and multiple doses of the narcotics.

Abnormalities, Drug-Induced↗
PubMed1977

Mood drugs.

Explore the source record for details and available documents.

Abnormalities, Drug-Induced↗
PubMed1978

Safety of therapy for allergic symptoms during pregnancy.

We undertook a literature review to document whether certain therapeutic measures could be considered safe during pregnancy in the allergic patient. With the possible exception of brompheniramine, the commonly used antihistamine drugs appear to be safe during pregnancy. The bronchodilators ephedrine and theophylline also appear to be safe, as does cromolyn. Corticosteroids do not appear to have adverse effects in pregnancy beyond those well recognized in nonpregnant patients. Because side effects are reduced when steroids are administered as aerosols in the nose or lung, these preparations seem well suited for use in pregnancy. The safety of allergic immunotherapy has been confirmed. For asthma, annual influenza vaccination is indicated.

Abnormalities, Drug-Induced↗